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Costs. December 2009. What is the cost of an MP3 player?. Overview. Carbon compliance and allowable solutions Part L 2010 Update on CfSH costs Are regulations driving low cost solutions?. Zero carbon homes. Energy efficiency first 25-30% Carbon compliance to 70%
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Costs December 2009
Overview • Carbon compliance and allowable solutions • Part L 2010 • Update on CfSH costs • Are regulations driving low cost solutions?
Zero carbon homes • Energy efficiency first 25-30% • Carbon compliance to 70% • Allowable solutions to +150%
How is the carbon compliance level achieved • Assumes advanced practice EE is mandated • After energy efficiency, savings dominated by photovoltaics • Some role for biomass, solar water and large wind
How is the carbon compliance level achieved • If only best practice is mandatory.. • Greater role for biomass
Regulatory changes in 2010 (unconfirmed) • New assessment method • New emission factors • Low energy lighting • Secondary heating • Party Walls • Minimal impact on new build cost • Impact assessment predicts <1% • Reduced thermal bridging important
Spec that achieves Part L 2010 will not automatically hit Code 3 (under SAP 2005) Code uplift will persist unless standards are redefined Implications for Code for Sustainable Homes ratings
Update on code cost allowances • consultation on definition of zero carbon homes • 33% agreed with costs • 32% disagreed • 35% did not know • of those that disagreed many • said that the costs were overstated • said that the costs were an underestimate
What are the actual costs being experienced? • Miller Homes • Code 3 = extra £5,000 to £7,000 • Code 5 = extra £30,000 • Code 6 = extra £50,000 • Persimmon • Code 3 = £3,000 to £4,000 • Code 4 = £6,000 to £12,000 • Federation of Master Builders • Code 5 = £40,000
Is regulation driving low cost solutions? • Overarching issues • Contribution to long term carbon targets • Clear technology path • Does not rely excessively on one solution • Costs not disproportionate (relative to other options) • Stimulates a co-ordinated approach (not islands of zero carbon)
Conclusions • Cost studies are indicative • Market is already innovating and streamlining supply chains • Still a wide range of costs being experienced • 2010 Part L has limited cost impact but link to Code is unclear • Zero carbon definition provides a platform for the industry to work around